infra: extract variables for diff report action to improve security
infra: extract variables for diff report action to improve security

checkstyle/checkstyle,checkstyle/checkstyle,romani/checkstyle,checkstyle/checkstyle,romani/checkstyle,romani/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,romani/checkstyle,rnveach/checkstyle,rnveach/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,romani/checkstyle,rnveach/checkstyle